Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.110
1.110 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.109 2017/08/30 10:33:57 nicm Exp $ */
1.1 nicm 2:
3: /*
1.84 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.54 nicm 21: #include <errno.h>
22: #include <fcntl.h>
1.35 nicm 23: #include <stdlib.h>
1.11 nicm 24: #include <string.h>
25: #include <termios.h>
1.30 nicm 26: #include <unistd.h>
1.11 nicm 27:
1.1 nicm 28: #include "tmux.h"
29:
30: /*
31: * Create a new session and attach to the current terminal unless -d is given.
32: */
1.63 nicm 33:
34: #define NEW_SESSION_TEMPLATE "#{session_name}:"
1.1 nicm 35:
1.92 nicm 36: static enum cmd_retval cmd_new_session_exec(struct cmd *, struct cmdq_item *);
1.1 nicm 37:
38: const struct cmd_entry cmd_new_session_entry = {
1.82 nicm 39: .name = "new-session",
40: .alias = "new",
41:
42: .args = { "Ac:dDEF:n:Ps:t:x:y:", 0, -1 },
43: .usage = "[-AdDEP] [-c start-directory] [-F format] [-n window-name] "
44: "[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] "
45: "[-y height] [command]",
46:
1.105 nicm 47: .target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
1.83 nicm 48:
49: .flags = CMD_STARTSERVER,
1.82 nicm 50: .exec = cmd_new_session_exec
1.1 nicm 51: };
52:
1.62 nicm 53: const struct cmd_entry cmd_has_session_entry = {
1.82 nicm 54: .name = "has-session",
55: .alias = "has",
56:
57: .args = { "t:", 0, 0 },
58: .usage = CMD_TARGET_SESSION_USAGE,
59:
1.105 nicm 60: .target = { 't', CMD_FIND_SESSION, 0 },
1.83 nicm 61:
62: .flags = 0,
1.82 nicm 63: .exec = cmd_new_session_exec
1.62 nicm 64: };
65:
1.88 nicm 66: static enum cmd_retval
1.92 nicm 67: cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 68: {
1.50 nicm 69: struct args *args = self->args;
1.92 nicm 70: struct client *c = item->client;
1.101 nicm 71: struct session *s, *as, *groupwith;
1.50 nicm 72: struct window *w;
1.75 nicm 73: struct environ *env;
1.50 nicm 74: struct termios tio, *tiop;
1.101 nicm 75: struct session_group *sg;
1.110 ! nicm 76: const char *errstr, *template, *group, *prefix;
! 77: const char *path, *cmd, *tmp;
! 78: char **argv, *cause, *cp, *newname, *cwd = NULL;
1.76 nicm 79: int detached, already_attached, idx, argc;
1.107 nicm 80: int is_control = 0;
1.50 nicm 81: u_int sx, sy;
1.59 nicm 82: struct environ_entry *envent;
1.90 nicm 83: struct cmd_find_state fs;
1.110 ! nicm 84: enum cmd_retval retval;
1.62 nicm 85:
86: if (self->entry == &cmd_has_session_entry) {
1.81 nicm 87: /*
1.106 nicm 88: * cmd_find_target() will fail if the session cannot be found,
89: * so always return success here.
1.81 nicm 90: */
1.62 nicm 91: return (CMD_RETURN_NORMAL);
92: }
1.51 nicm 93:
94: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
1.92 nicm 95: cmdq_error(item, "command or window name given with target");
1.51 nicm 96: return (CMD_RETURN_ERROR);
97: }
1.34 nicm 98:
1.110 ! nicm 99: newname = NULL;
! 100: if (args_has(args, 's')) {
! 101: newname = format_single(item, args_get(args, 's'), c, NULL,
! 102: NULL, NULL);
1.38 nicm 103: if (!session_check_name(newname)) {
1.92 nicm 104: cmdq_error(item, "bad session name: %s", newname);
1.110 ! nicm 105: goto error;
1.38 nicm 106: }
1.86 nicm 107: if ((as = session_find(newname)) != NULL) {
1.49 nicm 108: if (args_has(args, 'A')) {
1.110 ! nicm 109: retval = cmd_attach_session(item,
1.106 nicm 110: newname, args_has(args, 'D'),
1.110 ! nicm 111: 0, NULL, args_has(args, 'E'));
! 112: free(newname);
! 113: return (retval);
1.49 nicm 114: }
1.92 nicm 115: cmdq_error(item, "duplicate session: %s", newname);
1.110 ! nicm 116: goto error;
1.38 nicm 117: }
1.4 nicm 118: }
1.1 nicm 119:
1.101 nicm 120: /* Is this going to be part of a session group? */
121: group = args_get(args, 't');
122: if (group != NULL) {
1.105 nicm 123: groupwith = item->target.s;
1.85 nicm 124: if (groupwith == NULL) {
1.101 nicm 125: if (!session_check_name(group)) {
126: cmdq_error(item, "bad group name: %s", group);
127: goto error;
128: }
129: sg = session_group_find(group);
130: } else
131: sg = session_group_contains(groupwith);
132: if (sg != NULL)
133: prefix = sg->name;
134: else if (groupwith != NULL)
135: prefix = groupwith->name;
136: else
137: prefix = group;
138: } else {
1.34 nicm 139: groupwith = NULL;
1.101 nicm 140: sg = NULL;
141: prefix = NULL;
142: }
1.21 nicm 143:
1.6 nicm 144: /* Set -d if no client. */
1.34 nicm 145: detached = args_has(args, 'd');
1.48 nicm 146: if (c == NULL)
1.6 nicm 147: detached = 1;
1.107 nicm 148: else if (c->flags & CLIENT_CONTROL)
149: is_control = 1;
1.6 nicm 150:
1.48 nicm 151: /* Is this client already attached? */
152: already_attached = 0;
153: if (c != NULL && c->session != NULL)
154: already_attached = 1;
155:
1.54 nicm 156: /* Get the new session working directory. */
1.110 ! nicm 157: if ((tmp = args_get(args, 'c')) != NULL)
! 158: cwd = format_single(item, tmp, c, NULL, NULL, NULL);
! 159: else if (c != NULL && c->session == NULL && c->cwd != NULL)
! 160: cwd = xstrdup(c->cwd);
1.76 nicm 161: else
1.110 ! nicm 162: cwd = xstrdup(".");
1.54 nicm 163:
1.15 nicm 164: /*
1.67 nicm 165: * If this is a new client, check for nesting and save the termios
166: * settings (part of which is used for new windows in this session).
1.15 nicm 167: *
1.67 nicm 168: * tcgetattr() is used rather than using tty.tio since if the client is
169: * detached, tty_open won't be called. It must be done before opening
170: * the terminal as that calls tcsetattr() to prepare for tmux taking
171: * over.
1.15 nicm 172: */
1.48 nicm 173: if (!detached && !already_attached && c->tty.fd != -1) {
1.92 nicm 174: if (server_client_check_nested(item->client)) {
175: cmdq_error(item, "sessions should be nested with care, "
1.67 nicm 176: "unset $TMUX to force");
177: return (CMD_RETURN_ERROR);
178: }
1.48 nicm 179: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 180: fatal("tcgetattr failed");
1.19 nicm 181: tiop = &tio;
1.15 nicm 182: } else
1.19 nicm 183: tiop = NULL;
1.15 nicm 184:
1.4 nicm 185: /* Open the terminal if necessary. */
1.48 nicm 186: if (!detached && !already_attached) {
1.57 nicm 187: if (server_client_open(c, &cause) != 0) {
1.92 nicm 188: cmdq_error(item, "open terminal failed: %s", cause);
1.44 nicm 189: free(cause);
1.54 nicm 190: goto error;
1.1 nicm 191: }
192: }
193:
1.16 nicm 194: /* Find new session size. */
1.107 nicm 195: if (!detached) {
1.48 nicm 196: sx = c->tty.sx;
197: sy = c->tty.sy;
1.107 nicm 198: if (!is_control &&
199: sy > 0 &&
200: options_get_number(global_s_options, "status"))
201: sy--;
1.39 nicm 202: } else {
1.4 nicm 203: sx = 80;
1.18 nicm 204: sy = 24;
1.39 nicm 205: }
1.107 nicm 206: if ((is_control || detached) && args_has(args, 'x')) {
1.48 nicm 207: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
208: if (errstr != NULL) {
1.92 nicm 209: cmdq_error(item, "width %s", errstr);
1.54 nicm 210: goto error;
1.35 nicm 211: }
1.48 nicm 212: }
1.107 nicm 213: if ((is_control || detached) && args_has(args, 'y')) {
1.48 nicm 214: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
215: if (errstr != NULL) {
1.92 nicm 216: cmdq_error(item, "height %s", errstr);
1.54 nicm 217: goto error;
1.35 nicm 218: }
1.1 nicm 219: }
1.4 nicm 220: if (sx == 0)
221: sx = 1;
222: if (sy == 0)
223: sy = 1;
1.16 nicm 224:
225: /* Figure out the command for the new window. */
1.60 nicm 226: argc = -1;
227: argv = NULL;
1.81 nicm 228: if (!args_has(args, 't') && args->argc != 0) {
1.60 nicm 229: argc = args->argc;
230: argv = args->argv;
1.101 nicm 231: } else if (sg == NULL && groupwith == NULL) {
1.74 nicm 232: cmd = options_get_string(global_s_options, "default-command");
1.60 nicm 233: if (cmd != NULL && *cmd != '\0') {
234: argc = 1;
1.96 nicm 235: argv = (char **)&cmd;
1.60 nicm 236: } else {
237: argc = 0;
238: argv = NULL;
239: }
240: }
1.1 nicm 241:
1.59 nicm 242: path = NULL;
243: if (c != NULL && c->session == NULL)
1.75 nicm 244: envent = environ_find(c->environ, "PATH");
1.59 nicm 245: else
1.75 nicm 246: envent = environ_find(global_environ, "PATH");
1.59 nicm 247: if (envent != NULL)
248: path = envent->value;
249:
1.10 nicm 250: /* Construct the environment. */
1.75 nicm 251: env = environ_create();
1.97 nicm 252: if (c != NULL && !args_has(args, 'E'))
253: environ_update(global_s_options, c->environ, env);
1.11 nicm 254:
1.4 nicm 255: /* Create the new session. */
1.74 nicm 256: idx = -1 - options_get_number(global_s_options, "base-index");
1.101 nicm 257: s = session_create(prefix, newname, argc, argv, path, cwd, env, tiop,
258: idx, sx, sy, &cause);
1.75 nicm 259: environ_free(env);
1.1 nicm 260: if (s == NULL) {
1.92 nicm 261: cmdq_error(item, "create session failed: %s", cause);
1.44 nicm 262: free(cause);
1.54 nicm 263: goto error;
1.1 nicm 264: }
1.4 nicm 265:
1.16 nicm 266: /* Set the initial window name if one given. */
1.110 ! nicm 267: if (argc >= 0 && (tmp = args_get(args, 'n')) != NULL) {
! 268: cp = format_single(item, tmp, c, s, NULL, NULL);
1.16 nicm 269: w = s->curw->window;
1.110 ! nicm 270: window_set_name(w, cp);
1.74 nicm 271: options_set_number(w->options, "automatic-rename", 0);
1.110 ! nicm 272: free(cp);
1.21 nicm 273: }
274:
275: /*
276: * If a target session is given, this is to be part of a session group,
277: * so add it to the group and synchronize.
278: */
1.101 nicm 279: if (group != NULL) {
280: if (sg == NULL) {
281: if (groupwith != NULL) {
282: sg = session_group_new(groupwith->name);
283: session_group_add(sg, groupwith);
284: } else
285: sg = session_group_new(group);
286: }
287: session_group_add(sg, s);
1.21 nicm 288: session_group_synchronize_to(s);
1.66 nicm 289: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 290: }
1.94 nicm 291: notify_session("session-created", s);
1.1 nicm 292:
1.16 nicm 293: /*
294: * Set the client to the new session. If a command client exists, it is
295: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 296: */
1.25 nicm 297: if (!detached) {
1.73 nicm 298: if (!already_attached) {
299: if (~c->flags & CLIENT_CONTROL)
300: proc_send(c->peer, MSG_READY, -1, NULL, 0);
301: } else if (c->session != NULL)
1.48 nicm 302: c->last_session = c->session;
303: c->session = s;
1.103 nicm 304: if (~item->shared->flags & CMDQ_SHARED_REPEAT)
1.100 nicm 305: server_client_set_key_table(c, NULL);
1.69 nicm 306: status_timer_start(c);
1.93 nicm 307: notify_client("client-session-changed", c);
1.70 nicm 308: session_update_activity(s, NULL);
1.71 nicm 309: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 310: server_redraw_client(c);
1.1 nicm 311: }
312: recalculate_sizes();
1.22 nicm 313: server_update_socket();
1.26 nicm 314:
315: /*
316: * If there are still configuration file errors to display, put the new
317: * session's current window into more mode and display them now.
318: */
1.46 nicm 319: if (cfg_finished)
1.48 nicm 320: cfg_show_causes(s);
1.50 nicm 321:
322: /* Print if requested. */
323: if (args_has(args, 'P')) {
324: if ((template = args_get(args, 'F')) == NULL)
325: template = NEW_SESSION_TEMPLATE;
1.102 nicm 326: cp = format_single(item, template, c, s, NULL, NULL);
1.92 nicm 327: cmdq_print(item, "%s", cp);
1.50 nicm 328: free(cp);
329: }
1.89 nicm 330:
1.104 nicm 331: if (!detached) {
1.91 nicm 332: c->flags |= CLIENT_ATTACHED;
1.109 nicm 333: cmd_find_from_session(&item->shared->current, s, 0);
1.104 nicm 334: }
1.54 nicm 335:
1.109 nicm 336: cmd_find_from_session(&fs, s, 0);
1.92 nicm 337: hooks_insert(s->hooks, item, &fs, "after-new-session");
1.91 nicm 338:
1.110 ! nicm 339: free(cwd);
! 340: free(newname);
1.48 nicm 341: return (CMD_RETURN_NORMAL);
1.54 nicm 342:
343: error:
1.110 ! nicm 344: free(cwd);
! 345: free(newname);
1.54 nicm 346: return (CMD_RETURN_ERROR);
1.1 nicm 347: }
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